HP EliteBook 8470w Maintenance And Service Manual page 90

9. Disconnect the speaker cable from the system board connector (2).
10. Remove the bottom cover from the computer.
NOTE: Thoroughly clean the thermal pad material from the surfaces of the base enclosure (1) and
the PCH chip (2) each time you remove the base enclosure. All base enclosure and system board spare
part kits include replacement thermal pad material.
82 Chapter 4 Removal and replacement procedures